Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $167,000. Assume the standard deviation is $42,000. Suppose you take a simple random sample of 16 graduates. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( 167000 42000 b. What is the distribution of X ? X - N( c. For a single randomly selected graduate, find the probability that her salary is between $167,950 and $177,200. d. For a simple random sample of 16 graduates, find the probability that the average salary is between $167,950 and $177,200. e. For part d), is the assumption of normal necessary? YesO No

Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $167,000. Assume the standard deviation is $42,000. Suppose you take a simple random sample of 16 graduates. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( 167000 42000 b. What is the distribution of X ? X - N( c. For a single randomly selected graduate, find the probability that her salary is between $167,950 and $177,200. d. For a simple random sample of 16 graduates, find the probability that the average salary is between $167,950 and $177,200. e. For part d), is the assumption of normal necessary? YesO No

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $132,000. Assume the standard deviation is $31,000. Suppose you take a simple random sample of 37 graduates. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( b. What is the distribution of ? I - N c. For a single randomly selected graduate, find the probability that her salary is between $129,255 and $133,703. d. For a simple random sample of 37 graduates, find the probability that the average salary is between $129,255 and $133,703. e. For part d), is the assumption of normal necessary? O YesO No
Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $178,000. Assume the standard deviation is $39,000. Suppose you take a simple random sample of 36 graduates. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( b. What is the distribution of I? I - N( c. For a single randomly selected graduate, find the probability that her salary is between $173,350 and $181,100. d. For a simple random sample of 36 graduates, find the probability that the average salary is between $173,350 and $181,100. e. For part d), is the assumption of normal necessary? O NoO Yes o
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The following table shows the number of people that are either 18, 19, 20 or 21 years old, from a sample of 258 people. a) Complete the table. Age Number of people 18 54 19 69 20 70 21 (b Find the mean for this sample. Give your answer to at least 2 decimal places. (c Find the standard deviation for this sample. Give your answer to at least 2 decimal places.
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